package com.ithei.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.ithei.reggie.common.R;
import com.ithei.reggie.dto.DishDto;
import com.ithei.reggie.dto.SetmealDto;
import com.ithei.reggie.entity.Category;
import com.ithei.reggie.entity.Dish;
import com.ithei.reggie.entity.Setmeal;
import com.ithei.reggie.entity.SetmealDish;
import com.ithei.reggie.service.CategoryService;
import com.ithei.reggie.service.DishService;
import com.ithei.reggie.service.SetmealDishService;
import com.ithei.reggie.service.SetmealService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.stream.Collectors;

/**
 * 套餐管理
 */
@RestController
@RequestMapping("/setmeal")
@Slf4j
public class SetmealController {

    @Autowired
    private SetmealService setmealService;

    @Autowired
    private SetmealDishService setmealDishService;

    @Autowired
    private CategoryService categoryService;

    @Autowired
    private DishService dishService;

    /**
     * 新增套餐
     * @param setmealDto
     * @return
     */
    @PostMapping
    public R<String> save(@RequestBody SetmealDto setmealDto){
        log.info("套餐信息：{}",setmealDto);
        setmealService.saveWithDish(setmealDto);
        return R.success("新增套餐成功");
    }

    /**
     * 套餐分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize ,String name){
        //分页构造器对象
        Page<Setmeal> pageInfo = new Page<>(page,pageSize);
        //setmeal里没有套餐分类字段，只能使用dto
        Page<SetmealDto> dtoPage = new Page<>();

        LambdaQueryWrapper<Setmeal> queryWrapper = new LambdaQueryWrapper<>();
        //添加查询条件，根据name进行like模糊查询
        queryWrapper.like(name!=null,Setmeal::getName,name);
        //添加排序条件，根据更新时间降序排列
        queryWrapper.orderByDesc(Setmeal::getUpdateTime);

        setmealService.page(pageInfo,queryWrapper);

        //对象拷贝   Setmeal和 SetmealDto的泛型不一样
        BeanUtils.copyProperties(pageInfo,dtoPage,"records");
        //单独处理records  records是全部数据的总和
        List<Setmeal> records = pageInfo.getRecords();

        //相当于把SetmealDto分成两样操作，一份是item的基本对象，一份是套餐名称
         List<SetmealDto> list =  records.stream().map((item)->{
            //这是新new出来的，没有数据
            SetmealDto setmealDto = new SetmealDto();
            //对象拷贝
            BeanUtils.copyProperties(item,setmealDto);
            //分类id
            Long categoryId = item.getCategoryId();
            //根据分类id查询分类对象
            Category category = categoryService.getById(categoryId);
            if(category != null){
                //分类名称
                String categoryName = category.getName();
                //放到setmealDto当中
                setmealDto.setCategoryName(categoryName);
            }
            return setmealDto;
        }).collect(Collectors.toList());

        //把全部数据放到dtoPage中
        dtoPage.setRecords(list);
        return R.success(dtoPage);
    }

    /**
     * 删除套餐
     * @param ids
     * @return
     */
    @DeleteMapping
    public R<String> delete(@RequestParam List<Long> ids){
        log.info("ids: {}",ids);
        setmealService.removeWithDish(ids);
        return R.success("套餐数据删除成功");
    }

    /**
     * 根据id查询套餐信息和对应的套餐菜品
     * @param ids
     * @return
     */
    @GetMapping("/{ids}")
    public R<SetmealDto> get(@PathVariable Long ids){

        SetmealDto setmealDto = setmealService.getByIdWithFlavor(ids);
        return R.success(setmealDto);
    }

    /**
     * 修改套餐
     * @param setmealDto
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody SetmealDto setmealDto){
        log.info(setmealDto.toString());

        setmealService.updateWithFlavor(setmealDto);
        return R.success("新增菜品成功");
    }

    /**
     * 根据id获得status对套餐进行状态改变
     * 可以单个或者批量
     * @param status
     * @param ids
     * @return
     */
    @PostMapping("/status/{status}")
    public R<String> status(@PathVariable Integer status,@RequestParam List<Long> ids){
        LambdaQueryWrapper<Setmeal> queryWrapper = new LambdaQueryWrapper();
        queryWrapper.in(ids!=null,Setmeal::getId,ids);
        List<Setmeal> list = setmealService.list(queryWrapper);
        for (Setmeal setmeal : list) {
            if (setmeal != null){
                setmeal.setStatus(status);
                setmealService.updateById(setmeal);

            }

        }
        return  R.success("修改成功");
    }

    /**
     * 根据条件查询套餐数据
     * @param setmeal
     * @return
     */
    @GetMapping("/list")
    public R<List<Setmeal>> list(Setmeal setmeal){
        LambdaQueryWrapper<Setmeal> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(setmeal.getCategoryId() != null, Setmeal::getCategoryId,setmeal.getCategoryId());
        queryWrapper.eq(setmeal.getStatus() != null, Setmeal::getStatus,setmeal.getStatus());
        queryWrapper.orderByDesc(Setmeal::getUpdateTime);

        List<Setmeal> list = setmealService.list(queryWrapper);

        return R.success(list);
    }

    /**
     * 获取套餐的全部菜品
     * @param id
     * @return
     */
    @GetMapping("/dish/{id}")
    public R<List<DishDto>> dish(@PathVariable Long id){
        LambdaQueryWrapper<SetmealDish> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(SetmealDish::getSetmealId,id);
        List<SetmealDish> list = setmealDishService.list(queryWrapper);

        List<DishDto> dishDtos = list.stream().map((item) -> {
            DishDto dishDto  = new DishDto();

            BeanUtils.copyProperties(item,dishDto);

            Long dishId = item.getDishId();
            Dish dish = dishService.getById(dishId);
            BeanUtils.copyProperties(dish,dishDto);

            return dishDto;


        }).collect(Collectors.toList());

        return R.success(dishDtos);
    }
}
